The package is designed for customers who want to get service on an occasional basis. Occasional customer pays by credit card at the end of each service call and get a separate invoice for each service call. (The customer is not required to enter a credit card in advance, but only when he opens the service call). Occasional customer has no monthly bill, he is not charged by a monthly subscription fee, and he is not limited for the actual session time given. Casual customer can not receive different sessions in parallel calls (he could open parallel service calls, but their sessions will have to wait and will be carried out one by one).
